UEFI iPXE booting new Dell Optiplex 7460 to K2000

We have been UEFI iPXE booting systems for imaging on K2000 for a little over a year now without problems. Every model we have received from Dell has had no problem booting once you disable Secure Boot. We are now trying to deploy the new Dell Optiplex 7460 and I can't seem to get it to UEFI iPXE boot. It detects media presence, "iPXE initializing devices...ok", it gets to "iPXE 1.0.0+ (aa4b0) -- Open Source ..." just fine, but then dumps out
"Could not open net0: Input/Output error (https://ipxe.org/1d6a4698)".
I've tried updating the BIOS to the latest version, changing power settings, but nothing seems to work. I've even tried booting from USB into the KACE environment, but the network still drops out and running "startnet" doesn't initialized the built-in Ethernet. We've resorted to using both USB boot, and a separate USB Ethernet adapter.
All of our other systems can still UEFI PXE boot and Legacy PXE boot just fine to the K2000, just not this model. Our current work around is using a separate USB boot and a USB Ethernet adapter to get into the K2000 environment, but it's just too clumsy for the techs. It moving backwards like servicing the first gen XPS13s. The 7460 does Legacy PXE into the K2000 WindowsPE environment, but can't seem to initialize the network interface, I haven't tried updating the KBE with additional drivers, but I really don't want to resort to Legacy PXE boot, I would like to maintain UEFI PXE for our systems as all the other computers work with it fine.

Has anyone gotten the Optiplex 7460 to UEFI PXE into the K2000?
Any tips or anything I should try?

5 Comments   [ + ] Show comments
  • iPXE is an open source protocol, it does not store information about the device itself... it uses the same method and boot files for Desktop, Laptops, Surface Tablets etc. etc. etc, regardless of their brands.


    So if it's working fine for all other devices but this one, maybe this device isn't fully compatible with iPXE yet. I have seen this with Lenovo devices, where a BIOS update later will fix it.

    Maybe a setting in your BIOS?

    Make sure Secure Boot is OFF
    Make sure UEFI w/PXE is enabled - Channeler 3 years ago
  • I have confirmed that :
    Secure Boot is OFF and
    UEFI /w PXE is enabled.

    Is it possible that an updated ipxe.efi on the K2000 might be needed to support the new hardware?

    Waiting for Dell to push out a new BIOS version makes me a little sad. - lan.pham 3 years ago
  • Have you also enabled the UEFI network stack in bios? - jboling 3 years ago
    • Yes. - lan.pham 3 years ago
      • Any update on this? I have the same model and after imaging the HDD is no longer listed or bootable to, the BIOS shows it but it does not list as a boot option - inathanbr 3 years ago
  • So the 7460 apparently only allows you to use UEFI with internal drives. It is seriously dumb. You can only Legacy BIOS boot using external devices (network, and usb). So our current solution is using a KBE USB thumb drive and an external USB ethernet adapter to boot the computer. We then use our standard UEFI deployment of Win10. It's clumsy but it works. - lan.pham 3 years ago
  • I can boot to the NIC with UEFI, however, the driver doesn't seem to be loaded by the KBE. - RD94 3 years ago
    • FIXED. Apparently, the Driver Pack became corrupted when I downloaded it. All is well, now. - RD94 3 years ago

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